Add initial rust template

flake.lock

@@ -0,0 +1,41 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1652840887,
+        "narHash": "sha256-gEK4NNa4GwIgTZE63kt/4WTFAWRTJVSa30+h4ZjFh9U=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "52dc75a4fee3fdbcb792cb6fba009876b912bfe0",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1652776076,
+        "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "Samw's Nix flake templates";
+  inputs = { utils.url = "github:numtide/flake-utils"; };
+
+  outputs = { self, utils, nixpkgs }:
+    {
+      templates = {
+        rust = {
+          path = ./rust;
+          description = "My preferred rust setup.";
+        };
+      };
+    } // utils.lib.eachDefaultSystem (system:
+      let pkgs = import nixpkgs { inherit system; };
+      in { formatter = pkgs.nixfmt; });
+}

rust/.envrc

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+use flake

rust/flake.nix

@@ -0,0 +1,36 @@
+{
+  description = "Another cool rust disaster from samw.";
+
+  inputs = {
+    utils.url = "github:numtide/flake-utils";
+    devshell.url = "github:numtide/devshell";
+    naersk.url = "github:nix-community/naersk";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+  };
+
+  outputs = { self, nixpkgs, utils, naersk, devshell, rust-overlay }:
+    utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        rust = rust-bin.stable.latest.default;
+        naersk-lib = naersk.lib.${system}.override {
+          cargo = rust;
+          rust = rust;
+        };
+      in {
+        defaultPackage = naersk-lib.buildPackage ./.;
+
+        defaultApp = utils.lib.mkApp { drv = self.defaultPackage."${system}"; };
+
+        # Provide a dev env with rust and rls
+        devShell = let
+          pkgs = import nixpkgs {
+            inherit system;
+
+            overlays = [ devshell.overlay (import rust-overlay) ];
+          };
+        in pkgs.devshell.mkShell {
+          packages = with pkgs; [ (rust.override { extensions = [ "rls" ]; }) ];
+        };
+      });
+}